The significance of light and chlorophyll in photosynthesis was discovered by
Options
(a) Priestley (b) Ingenhousz (c) Englemann (d) Blackman
Correct Answer:
Ingenhousz
Explanation:
According to Jan Ingen-Housz(1779), both green parts and sunlight […]
The selective permeability of the plasma membrane allows the cell to maintain a constant internal environment. This has been termed as
Options
(a) osmosis (b) homeostasis (c) imbibition (d) homeolysis
Correct Answer:
homeostasis
The secretory function of cell is mainly performed by
Options
(a) peroxisomes (b) lysosomes (c) golgi apparatus (d) spherosomes
Correct Answer:
golgi apparatus
Explanation:
No explanation available. Be the first to write the […]
The seat of dark reaction of photosynthesis is
Options
(a) grana (b) thylakoids (c) stroma (d) intergranary fibres
Correct Answer:
stroma
Explanation:
No explanation available. Be the first to write the explanation for […]
The rupture and fractionation do not usually occur in the water column in vessel / tracheids during the ascent of sap because of
Options
(a) lignified thick walls (b) cohension and adhesion (c) […]
The role of meiosis
Options
(a) Formation of gametes (b) Bringing haplophase (c) Bringing diplophase (d) Completing life cycle
Correct Answer:
Bringing haplophase
Explanation:
The most important role of meiosis is to maintain […]
The rhizome differs from root in respect of
Options
(a) scale leaves at nodes and buds in axil (b) its thickness (c) green colour (d) thin roots
Correct Answer:
scale leaves at nodes […]
The requirement of assimilatory power to fix 6 molecules of CO₂ is
Options
(a) 6 ATP, 6 NADPH (b) 12 ATP, 18 NADPH (c) 18 ATP, 18 NADPH (d) 18 ATP, 12 NADPH
The rate of transpiration can be measured with the help of
Options
(a) auxanometer (b) refractometer (c) spectrophotometer (d) potometer
Correct Answer:
potometer
Explanation:
Potometer is an instrument or apparatus with the help […]
The rate of photosynthesis is higher in
Options
(a) very high light (b) continuous light (c) red light (d) green light
Correct Answer:
red light
Explanation:
The range of photosynthetically active radiation (PAR) […]
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